Improvement in joint-moulds or flasks



N PETERS, PHOTO-L THOGRAP @met dimite.

WILLIAM CULLISS, OF PHILADELPHIA, PENNSYLVANIA.

' l Lette/rs Patent No. 98,567, dated January 4, 1870.

IMPROVEME'IN. J' OINT-MOULDS OR FLASKS.

The Schedule referred to in these Letters Patent and making part of the same. l

Be it known that I, WILLIAM GUnLiss, of' Philadelphia city, county ofvPhiladelphia, and State of Pennsylvania, have invented a new and useful Improvement in Moulds' for Casting, by the use of which any article that canrbe moulded or cast from metal, can be cast or produced without a seam.

The nature of my invention consists iu having the mould made 0i' iron, and breaking it asunder along the liuc of'eaeh` designed joint, and having the several parts of 'fthe mould so` alranged, that by means of fixed adjusting-pins the several joint-s will t accurately, the one with the other, forming, when closed, a smooth and perfect surface tothe matrix of the mould, while the pins and irregular joint, as formed by the breaking, make a firm lock.

Planed, filed, or out joints in moulds, no matter to what perfectonart and skill mayA have brought them, leave in the article cast, blown, or pressed in them, a seam or blemish; but metal broken and brought together again in Ithe exact original position ofthe particles, and fastened in that position,iprc sents a surface so perfect, that when the joints of a mould are formed in this manner, they leave upon the cast or article blown or pressed, no visible trace.

This joint, while it can be applied to such a mult-i-l plicity" of forms of mould, and` is, necessarily, so varied in its character and application, may be fully understood by the following description, which I give so as to enable others skilled in the art to which it is applicable, to make and use my invention.

In describing its construction and operation, reference is had to tlie'aunexed drawing, making a part of this specification. i l

First, I foi-nl the design or pat-tern of the mould desired, and then proceed to mould and cast it in sand, in one piece, so arranging, with 'division-plates, that the metal along the line where the joint or joints are designed'to be, shall be of but moderate' t-hickness, capable of being broken by `means of wedges driven into the cavity or 4crevices lcftby the division-plates lnentioned. j

I also cast pins of wrought-iron or similar material in the mould, so arranged as to adj ust the joints and secure an equal amount of pressure upon the joint orjoints and pins, when the former are closed and the mould is being used.

Figure I represents a mould for casting balls or mandrels used in welding wrought-iron lues, tubes, or pipes. f

The mould proper, not 'including the cope d and follow-plate c, consists ot' the two parts a and b, forming, the former, the base, andthe latter,.the body of the mould, which are to be cast together.

c represents the crevice where the division-plates are to be inserted, in making, to mark the line of the intended joint.

Figures A, B, C, and D, represent plane views of the base, body, and cope of the mould showing, at

f, the adjusting-pins ;4 g, the pits or cavities for Ithe n.

same; h, the surface of the matrix; and E, the broken `oint. J The parts a and b are cast in one piece, in sand, around a ball or mandrel, turned, cut, or ground to thc exact sizedesired.

The pins f are ca-st in the parts Va and i).

`After a ,and b are cast, the cope d is cast, separately, upon the body It, and thc follow-plate e is then cast upon the cope, so that all the parts fit each other properly.

When cold, the two parts a and b arebrokeu apart,

surface of the body b of the mould, and fitting the .s

cope.

print in the centre, by which a hole is .made in the bed of sand, with which thecope is filled when using the mould for casting, Ain which a core is placed to form a cavity in the ball or mandrel when cast, as

is shown at m, in Figure E'.

WVhen preparing the mould for. use, the body his I placed upon the base a, the joint, which is shown in Fig A and B, at l, adjusting itself by means of the pins f. The cope'is placed upou the follow-platea, and iilled with sand,the core inserted, and then the cope is placed Iupon the `body l), and the whole clamped together, andthe-mouhlrilied with the molten metal through a gate provided 'in the sand.

VVheu the metal is chilled, the mould is unclamped and 'taken apart, the ball or mandrel cast drops out, and the mould is ready for use again.

Moulds cast or made substantially as above, will necessarily be of as many Yshapes and patterns as there `are articles torbe moulded, blown, or pressed,

and while my invention "is Aapplicable to and includes all forms and vaiieties of moulds which can be formed in one piece, and the-joint and joints ot' the saine be made by breaking, the drawings can only represent a type, as above described.

But for further description, I add Figure II, which represents an open mould for ,a bottle, which is cast and operated substantially as the former, ,with the It is also provided with a largeriron pin, n, or` 1 character is blown or pressed, instead of cast, and I will, therefore, only describe the several parts.

f represents t-he adjusting-pins.;

g, the pits or cavities inwhich the pins f t;

l is the line of the broken joint;

c, the surface of the crevice, formed by the use vof the division-plates; and

h, the surface of the matrix, l

What I therefore claim as my invention,and dethe to secure by Letters Patent, is-

'A joint in moulds, formed by breaking asunder,

yalong the line of the designed joint 'or joints, the

means oi'ixed pins, through which the pressure upon the joint or joints is relieved, as herein substantially WILLIAM GULLISS.

- described.

vWitnesses:

B. F. FISHER,

F. OLAUsEN. 

